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SubjectRe: wait_on_irq, CPU1
Date
Hello!

> > > drivers?
> > No. Although papers with boardstated that there is special kernel driver,
> > I prefer to use well tested in-kernel ones.
> > BTW, I have Raid012345 patchset applied, I don't consider this as driver,
> > it doesn't muck with interrupts and so on. I have 1 raid-1 mirror.
> I'm stuck. AFAICS CPU0 hangs within an bottom half handler, and CPU1
> executes
> global_cli() in rs_write() [linux/drivers/char/serial.c]
This is the same decision, as I did.

> wait_on_irq() doesn't print enough informations to locate the problem. How
> often does the server hang? I have a patch which would extend the debugging
It depends on something. It may hang in several days, but last hang was with
uptime of 25+ days.

> information if the problem happens again.
How much overhead it places in case of normal operations?
If not much, I am willing to apply it.

Bye,
Oleg
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